Lock valve



D. c. FISHER'.

LOCK VALVE. APPLxAIlo'N msn MAR.3,1921.

Patented May 23, 1922.

00h23@ 7 4 3 Wl Zh e W mi; w wmf/NZM. M Z. n n \T\ im n @m w nairesDANIEL C. FISHER, OF BOSTON, MASSACHUSETTS.

LOCK VALVE.

Specification of Application filed March 3,

To @ZZ whom t may concern Be it knowiithat I, DANIEL C. FIsHEr., acitizen of the United States, residing at Boston, in the county ofSuifolk and State of Massachusetts, have invented new and usefulImprovements in Lock Valves, of which the following is a specification.

This invention relates to a stop cock for controlling the flow of Huidthrough a conduit, such as the gasoline feed pipe of an explosive engineon a motor Vehicle, the cock comprisinga casing, having an internalvalve seat and inlet and outlet passages at opposite sides of the seat,and a plug valve tting said seat and adapted to be turned therein toopen and close the cock.

The object of the invention is to provide a stop cock, the plug valve ofwhich is adapted to be turned to open and close the cock, only bythebarrel or cylinder and the key of a pin tumber lock, such as the wellknown Yale lock. A lock of this type is recognized as affording adesirable degree of protection to property guarded by the lock.

The invention is embodied in the improvements hereinafter described andclaimed.

Of the accompanying drawings forming a part of this specification,-

Figure 1 is a sectional view of a stop cock embodying the invention, thecock being closed.

Figure 2 is a view similar to Figure 1, showing the cock opened.

Figure 3 is a section on the 3-3 of Figure 2.

Figure el is a fragmentary side view, showing the interengaged portionsof the lock barrel or cylinder and the plug valve.

Figure 5 is an end view, showing the inner or valve-engaging end of thelock barrel.

Figure 6 is a fragmentary sectional View, similar to a portion of Figure1, showing a modification.

The same reference characters indicate the same parts in all of thefigures.

In the drawings, 12 represents a cock casing or body having a taperedseat 13, in which the tapered plug valve 14C is fitted to turn. Theeasing has the usual inlet and outlet passages 15 and 16, and the plugvalve has the usual transverse passage 17, which connects the passages15 and 16 when the valve is open, the valve closingsaid passages whenturned approximately ninety degrees from its open position.

plan of line Letters Patent.

ljatented lviiay 2S, 1922. 1921. Serial lo. 449,486.

The pin tumber lock which is combined with the cock, includes the usualbarrel adapted to be turned by a key, through au angle of ninetydegrees. Said lock ernbodles nothing new with nie, excepting; ashereinafter pointed out. if

rl'he lock casing 19 is fixed to the Cock body or casing' 12, preferablyby a pin 25). as shown by Figure The lock barrel or cylinder 21 is inaxial alinenieiit with the plug' valve 14, and is engaged with thelatter preferably by means of a tongue 22, projecting from the inner endof the bari ,l. and a slot 23 formed in the outer end of the plug valve,said tongue and slot presenting coinplemental interengaging fares whichare formed to cause rotation of the plug valve by the barrel, and topermit indrpendent cndwise movement of the plug valve by a spring' 25,interposed between thc barrel and the plug valve for a` purpose herein-yafter stated.

As usual in locks of this type the barrci is normally locked in the caseby spring pin tumblers 26, and is unlocked by "a key 2T having a steppedor irregular edge 28, adapted to displace .said tumblers to permit apartial rotation of the barrel and the plugl valve by the key. g; inother locks of this character, the case and tumblers are adapted topermit the insertion and removal of the key in and from the usual keyslot 29 (Figure 5) only when the barrel is in the predetermined positionshown by Figure 1, the usual tumbler-guiding orifices 31 in the barrelbeing in aliiiement with the usual sockets 32 in the case, in which thespringpiessed barrel locking bolts 53S are movable. so that endwisemovement of the key is enabled to displace the tiunblers and the bolts.lVhen the barrel is in the position shown by Figures 2 and 3, thetumbleis are rigidi)T backed by the ease 19, so that the key caunot beremoved from the barrel. l so ai'- range the lock relatively to the rockbody and its passages 15 and 16, that when thc barrel is in saidpredetermined position the cock valve ig closed, its passage 17 beingout of alineiiient with Jthe body passages 15 and 16. lhen the valve isopen, as shown by Figures 2 and 3, the key cannot be movedirom thebarrel. rThe operator` therefore, knows that the valve is closed whenthe key is removed from the barrel. becausev the key cannot be removedwhen the valve is not fully closed. The cock body 2 is closed by animperforate head 12a at the smaller end ot the valve seat, so thatleakage from this end is impossible.

'Io compensate ior Wear of the valve seat and the plug valve, I providethe spring 25 and the above-described complemental interengaging meanson the barrel and the plug valve. Said spring is preferably helical, andbears at one end on the bottom of a socket 3(3 in the plug valve, and atits opposite end on the barrel rib 22, as shown by Figures l, 2 and 3.In the modification shown by Figure 6, the spring is oi' largerdiameter, and one ot' its ends surrounds a square shank or stud 39,projecting from the inner end of the barrel, the spring bearing on saidinner end. The other end ot the spring bears on the bottom ot an annularsocket 37 in the plug valve 14, said socket surrounding a square innerSocket 38, which receives the stud 39.

T he spring-receiving recess is located between the valve passage 1T andthe larger end oit the valve, and the spring is seated at one end on thebottom or' said recess, the opposite end being in position to be pressedinward by the locll: barrel when the lock is inserted and secured in thesocket of the cocl; casing. Ivi/hen the lock casing is in place and isfastened by securing means, such as the pin 20, (Figure 3), the outerend of the spring is seated on thc lock barrel and compressed thereby.rIhe operation of assembling the cock'casing and lool; thereforecompresses the spring and causes it to hold the valve against its seat.The spring is located Wholly Within the periphery of the valve, so thatI am enabled to employ valve seat and valve of suitable length to ensurea fluid-tight joint, Without providing a space in the cock casing,outside the valve seat, for the reception ol the spring. The length ot'the casing is, therefore, reduced to a ufiinimum.

The lool; case 19 is preferably li tted in a, socket 'formed in theouter end ol the cock body, by an annular wall 40, integral with thecock body and adapted to be inserted iu an orifice in a liXed support4l, which may be the instrument board or dash of a motor vehicle, thearrangement of the socket being such that When the locl case isinserted, the barrel is in alinement with the plug valve. rlhe securingpin 20 is driven through the Wall 4() into the lock case as shown byFigure 3. Said Wall is provided with means for securing it to thesupport 41, said means being preferably embodied in an external screwthread 44 formed on the wall 40, and annular internally threadedclamping plates or washers 42 and 43. formed to be screwed up againstopposite sides of the. support 41.

To prevent liability oi' the loosening of the clamping plate or Washer43 by the jar to which the structure which includes the holder 4l issubjected, I provide the said Washer With an annular lock-nut 45, havinganV internal thread engaging the external thread 44 on the annular Wall40, and an external thread 46 engaging an internal thread 47 in anannular enlargement 48 on the Washer 43. The pitch of the lock-nutthread 4G is opposite that of the wall thread 44, and the thread 46 isfiner than the thread 44. The enlargement 48 and the annular lock-nutare externally ot hexagonal form, so that they may be simultaneouslyengaged by-a Wrench, andturned to force the washer 43 against the innerside ot the holder 14. After this has been done the wrench may be movedslightly sidewise and engaged only with the annular lock-nut A slightturn of the lock-nut by the wrench now causes a binding action or' theinterengaged screw threads on each other, and locks the innerwasheragainst accidental turning.

I claim:

i stop-cock comprising a casing having at one end portion a taperedVvalve seat, and at its opposite end portion a socket communicating Withthe larger end oi the seat; a tapered plug valve fitting said seat, andprovided between its ends With a transverse passage adapted to connectinlet and outlet passages inthe casing, and With a springreceivingrecess betweenA said passage and the larger end ot' the valve; a'pintumbler lock, including a lock casing, and a valveturning lock barreladapted to turn Ywithout endwise movement in the lock casing, saidbarrel and valve being provided 'with compleinental interengaging facescausing the valve to turn with the barrel, and permit.- ting independentendwise movements of the valve; a spring located Wholly ivithin 'theperiphery of the valve, and seated at one end on the barrel, and at itsopposite end on the bottom of the said recess; andmeans securing thelocl: casing in said socket and maintaining the barrel in position tocornpress the spring.

In testimony whereof I have affixed my signature.

DANIEL c. msnen.

